GitHub pull request #2946 of commit 4faa3fead84147aea7e4a0fb59a5def8983c15f0, no merge conflicts.sha1origin/pr/2946/mergeghprbActualCommit4faa3fead84147aea7e4a0fb59a5def8983c15f0ghprbActualCommitAuthorYonghong SongghprbActualCommitAuthorEmailyhs@fb.comghprbAuthorRepoGitUrlhttps://github.com/iovisor/bcc.gitghprbTriggerAuthorghprbTriggerAuthorEmailghprbTriggerAuthorLoginghprbTriggerAuthorLoginMentionghprbPullId2946ghprbTargetBranchmasterghprbSourceBranchyhs_devGIT_BRANCHyhs_devghprbPullAuthorEmailghprbPullAuthorLoginyonghong-songghprbPullAuthorLoginMention@yonghong-songghprbPullDescriptionGitHub pull request #2946 of commit 4faa3fead84147aea7e4a0fb59a5def8983c15f0, no merge conflicts.ghprbPullTitlesilence a python travis-ci warningghprbPullLinkhttps://github.com/iovisor/bcc/pull/2946ghprbPullLongDescriptionThe travis-ci flags a python warning:\r\n```\r\n $ flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics\r\n ./tools/biolatpcts.py:123:5: F821 undefined name 'die'\r\n die()\r\n ^\r\n 1 F821 undefined name 'die'\r\n```\r\nLet us fix it with proper error message and then exit().\r\n\r\nSigned-off-by: Yonghong Song <yhs@fb.com>ghprbCommentBodynullghprbGhRepositoryiovisor/bccghprbCredentialsId6d3daf13-69b8-48b1-9c8f-ec5353264113false<a title="silence a python travis-ci warning" href="https://github.com/iovisor/bcc/pull/2946">PR #2946</a>: silence a python travis-ci ...#52411624447460664bcc-pr #524524false5244200SUCCESS1591165051706https://buildbot.iovisor.org/jenkins/user/davemarchevsky/my-views/view/all/job/bcc-pr/524/git524https://buildbot.iovisor.org/jenkins/user/davemarchevsky/my-views/view/all/job/bcc-pr/label=fc25/524/524https://buildbot.iovisor.org/jenkins/user/davemarchevsky/my-views/view/all/job/bcc-pr/label=fc26/524/524https://buildbot.iovisor.org/jenkins/user/davemarchevsky/my-views/view/all/job/bcc-pr/label=fc27/524/524https://buildbot.iovisor.org/jenkins/user/davemarchevsky/my-views/view/all/job/bcc-pr/label=fc28/524/524https://buildbot.iovisor.org/jenkins/user/davemarchevsky/my-views/view/all/job/bcc-pr/label=ubuntu1604/524/524https://buildbot.iovisor.org/jenkins/user/davemarchevsky/my-views/view/all/job/bcc-pr/label=ubuntu1710/524/524https://buildbot.iovisor.org/jenkins/user/davemarchevsky/my-views/view/all/job/bcc-pr/label=ubuntu1804/524/